Well elevator



Dec. 20, 1927. 1,653,095

J. GRANT WELL ELEVATOR Filed March 7, 1923 W I (2 4 F Pia/Q INVENTOR I Jbhn ran? I ATTORNEYS Patented Dec. 20, 19 2 7.

UNITED STATES PATENT OFFICE.

1 I r JOHN GRANT, OF L08 ANGELEQ, CAIJIQBNIA, ASBIGNOR TFO- DUNN MANUFACTURING COEPANY, 01; OXNABD, CALIFORNIA A CORPORATION 011'. CALIFORNIA.

.wm nnnvaron This invention relates to well elevators, that is,'to devices for handling raising and lowering sections and strings of tubing, casing and piping, such as used in the drilling,

- boring and maintenance of oil and other wells, or for handling analogous objects or articles; and the invention has for its object to provide improved apparatus of this general character which will be superior in point i of relative simplicity and 'inexpensiveness of construction, taken in conjunction with positiveness and reliability 1n operatlon, convenience in manipulation and use, durability and freedom from 'liability to get out of order or repair, andcompactness in form,

and which will be generally superior in efiiciency and serviceability.

The invention constitutes an improvement upon or departure from the construction disclosed and claimed in other applications. for

patent for well elevators heretofore filed by me, among which is that filed February 14,-

1923, Serial No. 619,000, for well'blevators. Withthe above and other objects in view 25 the invention consists in-the novel andusefu provision, formation, construction, combination,' 'association and relative arrangement I of parts, members and features, all as here inafter described, shown in the drawing, and 1 finally pointed out in claims.

In the drawing: Figure 1 is a frontelevation'- of a well elevator constructed and organized to embody the invention; suspension means or links for supporting the elevator and its oad, and cooperating therewith, be in fragments, means for retaining t e links in connection with the elevator being shown, and in operative position, v

Figure 2 is atop planview of the elevator shown in Figure 1, the same being partly in section upon the line 2-2, Figure 4; Figure '3 is a vertical transverse sectional view: taken upon the line 3-3, Figure 2,

being in elevation, the means for retaimng the suspension means or links being shownin operative position;

Figure 4 is a view similar to Figure 3,

with the link-retaining means shown in in operative position, and the links partly re-' moved 9m the elevator;

Figure 5 is an end view of-the elevator as i shown in Figure 1; f

6 is a. perspective view of oiiememshown of these I Application fled larch 7,1823. Serial Io. 823,400.

ber of the linkretaining means .in detached I position Figure 7 is a detail transverse sectional view taken upon the line 7-7, Figure 1; and, Figure 8 1s a detail transverse sectional view taken. upon the line 8-8, Figure 1.

In Figures 1 and 2 are shown fragments of two sections or joints of tubing or casmg, the same being .connected together by a union or collar beneath which the elevator is applied.

rresponding parts in all the figures are designated by the same reference characters.

Referring with particularity to the drawing, I have shown at A the body portion of v a well elevator which, as shown in Figure 2,

is curved. or bowed to casing or tubing B, 0

partially surround the string or series of joints or tubin or casing sections. The body A prefera ly may surround the casin or tubing for more than half its superficia area, so that the ma or portion of the collar rests upon the body A;

the open side of the body A be closed by a gate or the like D, which may be hinged, as at d, at one side, to one side or terminal portion of the body A, and the free end of which gate D may be provided with locking means 0 for cooperatlng with the other terminal portion of the bod A, or an extension thereof, to retain the tu ing ;or casing B within the elevator, and surrounded by its body and such gate. This prevents displacement of the elevator from the tubing or casing, or escape of the casing.

laterally from the elevators All atures of the general elevator conor tubi struction are not involved'in the present invention, which relates in substance to -means E for releasably retaining in osition suspension means comprising a 1i or lmks ,or

other substitute or uivalent devices f apwhich two joints or y eing adapted to plied'in connection with the elevator body A (mend extensions 7 and 8 thereon, whlch en extensions are preferably diamefiricall op sed' to each other. The means E pre f 1;

7:. respectively, which coo crate with the respective links f, such mem rs g and It being capable of movement into and out of position to retain the respective links-in. working positions.- It will be understood that such links 7 are'suspended from a hook in the derrick of the well, or otherwise, and such suspension is notponcerned specifically in the present 1I1V8I1t'l0n;

, In the particular form shown in the draw verse or substantially horizontal member 11, f togetherwith a bottom and substantially providin horizontal member 12. Each extension 7- 'and 8 is provided with a substantially vertical bore 13 adjacent the body A within which plays the limb 10, and the outerend portion of each extension 7 or 8 is bifurcated, as at 9 in the upper portion, to embrace and accommodate the vertical limb 9, and is bifurcated at the lower portion, as at 12* to accommodate the lower limb or foot 12 of the respective member 9 or k, such accommodation and reception ineach case for vertical play of the respective mem er 9 or 72., and each extension 7 and 8 being slotted at the top, as shown in the broken away portion at 11,-to accommodate the top limb lLin part, when the respective member g or his in lowered position, as

shownin Figures land 3. Each extension is cut away at its end portion inwardly to provide a curvedseat or socket 7 or 8 for the respective link f, and further to provide a passage-way 7 .or 8 to permit and accommodate removal of the link from such curved seat 7 or 8, such seats and passagegways providing for a link-accommodation, both in use, introduction and withdrawal of the suspension means. When the members 9 and h arein lowered position the vertical limbs 9 at their lower extremities in part close the passage-ways 7 and 8'; or at least to an extent which prevents escape or dis lacement of the links outwardl through sai passageways, even if they e lowered from their seats 7 and 8*,the passa e-ways at their innei' terminal portions being of greater vertical dimensions, to includethe curved formations of said seats, said seats being above the inner end portions of's ch passage-ways.

When such members 9' an it are lowered as aforesaid, the base or foot. members or limbs 12 are projected beneaththe furcations 12 of the bifurcated portions 12 in part. orin I whole, so as to present themselves for con- "tact with the derrick floor, or other object or objects, so that said members'g and .72. may

vbe raised, causing the vertical limbs 10 to rise in the bores 13, the transverse limbs 11 to rise in the slots 11*, and thevertica] limbs 9 to between thefurcations 9 of the bifurcated portions 9; and this ermits the lower ends of the links f to be displaced or removed from the extensions 7 and 8 outwardly, as illustrated in Figure 4;, so that they may be applied to another elevator. It will be understood, however, that the members 9 and k may be manually or otherwise voluntarily operated, if desired. When the members 9 and h are held in raised position the links f may be passed through the passage-ways 7 and 8 and brought into the seats 7 and 8*, whereupon said members may be lowered and the passage-ways .in part or in whole closed to retain the links in position.

As in the case of the inventions disclosed in said other applications, this invention provides for quick and convenient, or automatic, operation of the means for retaining the suspension means in -position, and when the elevator rests upon the derrick floor, or the'foot members 12 contactwith some objector objects, holding the members 9 and It raised, they are iri position to admit links, which are immediately retained from release or displacement as soon as the links and elevator are raised. Great' saving of time and labor, which is very material in the modern fast drilling ractice, results in the use of this invention. The members 9 and it are limited in their vertical or substantially vertical play by the engagement of the foot members 12 and transverse members ll-with the extensions 7 and 8, in the former case. by shoulders 12, and in-the latter case by the bottoms of the slots or channels 11". In assembling the members 9 and tion hereinabove described, and indicated and disclosed in the drawing, without departingfrom the true spirit ofthe invention.

iOne important feature of the present invention consists in the fact that the bifurcation 12 of each extension 7 and 8 may be initially manufactured with extra length or dimension in projection from the body A, and may thereafter be cut down to just the desired dimensions for sitting across the well hole in the derrick floor.

. Having thus disclosed my invention, I claim and ent: 1. Improvements of the character disclose'd, comprising a body adapted to be applied to work, suspension means for the 'same, and means for retaining such suspension means inassociation with the body;

.said latter" means being slidably associated passage-way providing for access to said seat, and said slidable means being adapted when in one position to obstruct said passage-way; said slidable means being pro-- vided with a part adapted to be projected into position to cause movement of said slidable means upon contact with an object.

2. Improvements of the character disclosed, comprising a body adapted to be applied to work, suspenslon means for the same, and means for retaining such suspen-' sion means in association with the body; said latter means being slidably associated with the body; the body being provided with a seat for the suspension means and with a passage-Way providing for access to said seat, and said slidable means being adapted when in one position to obstruct said passage way; said slidable means comprising spaced limbs, a transverse limb connecting the same, and a foot portion adapted for contact with an object and connected with one of said spaced limbs.

3. Improvements of the character disclosed, comprising a body adapted to be applied to work, suspenslon means for the same, and means for retaining such suspension means in association with the body; said latter means being slidably associated with the body; said body being provided with an extension with which said suspension means is directly associated and'with which is likewise associated said. slidable means; said extension bein substantially vertically bifurcated, and sai slidable means comprising connected substantially vertical and substantially horizontal parts accommodated bysuch bifurcation.

4. Improvements of the character disclosed, comprising a body adapted to applied to work, suspension means for the same, and means for retaining such suspension means in. association withthe body; said latter mean's bein slidably associated with the body; said he y bein provided with an extension with which said suspension means is directly associated and with which is likewise associated said slidable means; said extension beingsubstantially vertically bi 'furcated, and said slidable means compris-;

the body when the body is in one position.

and permitting a releasing of the suspension means whenthe body is in a second position.

6. Improvements of the character disclosed, comprising a body adapted to be a plied to work, suspension means for t e same, and means for retaining such suspension means in association with the body; said latter means bein slidably associated with the body; said s idable means being provided with a part adapted to cause movement thereof to release the suspension means when the slidable means contacts with an ob'ect.

' n testimony whereof, I have signed my name to this specification. JOHN GRANT. 

